Suitcase shockproof double pulling bars structure

ABSTRACT

The present invention of a suitcase shockproof double pulling bars structure includes a pair of pulling bars, each pulling bar has a lower bar and an upper bar, a handle is on top of the upper bar. A rubber bar is disposed between the handle and the upper bars, a plurality of troughs are disposed on the front and back sides of each rubber bar. Accordingly, shock and vibration as well as wave movement transmitted from the upper bars is greatly reduced by the rubber bars to prevent user&#39;s wrist from being injured and twisted.

BACKGROUND OF THE INVENTION

[0001] The present invention relates to suitcase pulling bars and more particularly to a suitcase shockproof double pulling bars structure. Conventional suitcase has casters on the bottom for rolling, the suitcase handle bar have to take shock and vibration if the ground is bumpy. This may injure the user's wrist and arm muscle. Referring to FIG. 1, it shows a suitcase 11 with a single pulling bar 10. The pulling bar 10 has a lower bar 12 and an upper bar 13. An elastic rubber bar 14 is disposed at the bottom part of the upper bar 13 for absorbing shock and vibration from rolling on bumpy ground. Vibration and shock are transmitted to the lower bar 12 from the casters 15, part of the vibration and shock is absorbed by the rubber bar 14, the rest is then transmitted to a handle 16 through the upper handle bar 13.

SUMMARY OF THE PRESENT INVENTION

[0002] The present invention of a suitcase shockproof double pulling bars structure includes a pair of pulling bars, each pulling bar having a lower bar and an upper bar, the upper bar can be sleeved inside the lower bar. A positioning frame is respectively disposed at the upper and lower ends of the lower bar for fixing on the back of a suitcase, a handle is placed on top of the upper bar. A pair of rubber bars are disposed between the handle and the upper bars, a plurality of horizontal troughs are disposed on the front and back sides of the rubber bars. The rubber bars can greatly reduce shock and vibration as well as wave movement transmitted from the upper bars, and the troughs allow the rubber bars to bend curvier, thus can absorb more shock and vibration to prevent user's wrist from being injured and twisted.

[0003] The present invention has a primary objective to provide a double pulling bars structure to absorb more vibration and shock than a single pulling bar.

[0004] Another objective of the present invention is to provide a different way which rubber bar is disposed to reduce shock and vibration before it reaches the handle and might cause injury to the user's wrist.

[0005] The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006]FIG. 1 is a flat view of a suitcase with conventional single pulling bar,

[0007]FIG. 2 is an exploded perspective view of the present invention of a suitcase shockproof double pulling bars structure,

[0008]FIG. 3 is an assembly view of the present invention of a suitcase shockproof double pulling bars structure,

[0009]FIG. 4 is a flat assembly view of the rubber bars of the present invention of a suitcase shockproof double pulling bars structure,

[0010]FIG. 5 is a sectional view of the rubber bars of the present invention of a suitcase shockproof double pulling bars structure,

[0011]FIG. 6 is of a flat view of the rubber bars being bent when force is applied on it, and

[0012]FIG. 7 is a flat view of the present invention when the suitcase bears shock and the rubber bars are being bent.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0013] Referring to FIGS. 2, 3 and 4, the present invention of a suitcase shockproof double pulling bars structure comprises a pair of pulling bars 20, each pulling bar 20 having a lower bar 21 and a upper bar 22. The upper bar 22 can be sleeved inside the lower bar 21. A positioning frame 23 is disposed at the upper end of the lower bars 21, another positioning frame 24 is disposed at the lower end of the lower bars 21. As shown in FIG. 7, the positioning frames 23 and 24 are fixed on the back of a suitcase 30. A rivet 251 is used to connect a rubber bar 25 to the upper bar 22, another rivet 252 is used to fixed a handle 26 at the upper end of the rubber bar 25. The front and back sides of the rubber bar 25 having plurality of trough 253, the said front and the back sides are parallel to the surfaces of the suitcase 30 when it is fixed on the positioning frames 23 and 24.

[0014] Accordingly, the present invention of a suitcase shockproof double pulling bars structure, as shown in FIG. 5, when the handle 26 is hold by a handle and the suitcase is being pulled on bumpy ground, shock and vibration is transmitted through the lower bar 21, the upper bar 22 and then to the rubber bar 25, most of the shock and vibration is absorbed by the rubber bar 25. With reference to FIGS. 6 and 7, the rubber bar 25 is being bent when the upper bar 22 waves due to the shock and vibration transmitted from the lower bar 21. Furthermore, the troughs 253 on the front and back sides of the rubber bar 25 allow the rubber bar 25 to bend curvier. Thus user's wrist is protected from being twisted and injured when the shock and vibration can be greatly reduced, also the rubber bar 25 is being bent curvier to even the wave of the upper bar 22.

[0015] Even though the mechanism and structure of the prevent invention is indeed simply and easy to comprehend, the way the rubber bar 25 is disposed in the present invention is different from the way the rubber bar 14 is disposed in convention pulling bars structure. The rubber bar 25 is placed under the handle 26 in the present invention while the rubber bar 14 is placed under the upper bar 13 in conventional pulling bars structure. The way the rubber bar 25 disposes can greatly reduce shock and vibration transmitted from the upper bar 22 before it reaches the handle 26 and might cause injury to the user's wrist.

[0016] The specification relating to the above embodiment should be construed as exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents. 

I claim:
 1. A suitcase shockproof double pulling bars structure comprising: a pair of pulling bars, each pulling bar having a lower bar and an upper bar, said upper bar can be sleeved inside said lower bar, a positioning frame is respectively disposed at the upper and lower ends of said lower bar for fixing on the back of a suitcase, a handle is placed on top of said upper bar; a pair of rubber bars are disposed between said handle and said upper bars, a plurality of horizontal troughs are disposed on the front and back sides of said rubber bars, said rubber bars can greatly reduce shock and vibration as well as wave movement transmitted from said upper bars, and said troughs allow said rubber bars to bend curvier, thus can absorb more shock and vibration to prevent user's wrist from being injured and twisted. 